11.24: Two wave pulses travel to the right toward a rigid boundatue8y b(z 7 0h. b;kkwxplk1b/ry as shown. After reflection of the triangular pulse, the pulses will interfere. Which on ybwl0 .ku 17k(ethkz;xpbb8/e of the following pictures best represents the superposition of the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes through the air and strikes the su1c 37dt2 vqpj q7cfi+hrface of a plastic block. Which pair of statements correctly describes the phase changes for the reflected wave av ij d+qq cp2ct3f7h71nd the transmitted wave?

  12.02: A ray of light passes straight downward t0lv, rqhq8m24 f cdf+)xu)mbp hrough the point labeled B in the diagram shown. The ray reaches a flat mirror placed at an ang4p+vc0) hlbf2mxr, qqmf d )u8le $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs whenever light is incidentup* 9qr2t.a1is8cb)dy+d/ gxqqo lh - on

  05.18: A student hold a hand mirror to observe the back of her head kg0t0mi z g xv99+ gkmut81cehysr9za)9r4 9pwhile standing in front of and looking into a wall mirror. If she is stan9a mz10y0 pheu8rgc9r9gt +9xmt)4 vigzskk9 ding 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed that a light ray changes direction 8emr 1,9 e,a hpe:(zuwg pcll3when it enters a new ma8we9pmrz, lpg1ea, ( uhlce3:terial. Which one of the following choices is the term best associated with this phenomenon?

  96.19: Light that has wavelength of 500 nm in air has wavelen ueg-xt p8; :pa lf1z3xgp/ip4gth 400 nm in a transparent m l - /agpgux if3x1p4:p;pzte8aterial. What is the index of refraction of the material?

  98.04: As sound travels from steel m4:ixq5yx sqb d66:ow into air, both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a diuf(h+hi c -88vlfib :7:yozqofferent index of refraction which of the following wave properties would NE7byf8hl u- 8z( vocqhfo:ii:+VER change?

  05.47: A sound wave generated from a tuning fo 4do(aqh) )rkzrk of single frequency travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes from air hq)a( kdorz)4 to rock?

  14.28: A waterproof speaker placed at the bottom o av/ x5,g8otauf a swimming pool emits a sound wave that travels toward the surface of the water. In the water, the sound wave oa uv /x8g5ta,has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectangular glass block with duqi n)z xgot3v2u9.r.pk w ;8an angle of.xp)kg dq o328rnu. ;i9zwut v incidence of $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is dp9:sc3sd8sz n irected toward a point P on a boundary as shown to the right. Which segment best re3csn8sps :d9z presents the refracted ray?

  98.17: Which diagram best represents what happens toe+;rnp: mei5r 8ob; 6+ixiacx a ray of light entering air from watera;n ic ii +ee8+r;p:r6xbmx5o ? Air is at the top in all diagrams.

  94.11: The critical angle of a material is the 1, qm.vd2ddg ys w.c-qt5i*kx44kw vfangle of incidence for which the angle of refrav g*mq1qc2sv4wkw d 5dd4-y.fkt.x,i ction is:

  95.12: The principle undej7l y:wak4er8qf6po7rlying fiber optics is:

  98.36: The critical angle in a transparen,msu +kij(u+up 37ra1sl7 p3j v*gpm it substance surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an index of refraction of n =/ha; /w2w* qhbzqniy8je/rq ) 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is v, what is the speedwhb ye/qnj w h8;a qq/zi/)2*r of light in material X?

  03.15: A jeweler can distinguish between yj2-lv/faldu1wy a+5uujm.; a diamond and a piece of glass by obserwdf ml.a;/yu2u+ j juy1-a v5lving the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear material. Whenk aqs8r .gq2r) the light makes an angle ofr8qq 2rs. ag)k incidence equal to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a mate o)+o.stz(:sr7liyja - 2uf;wakdw /xy k2e0 irial of index of refraction n. The laser beam emerges from t/sjof:02+)k rsxwa-2uo; .(ilaekzi wd 7yy the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n is:

  95.31: A beam of light passes from medium 1 to medium 2 to medium 3h vbj 5w,5dxc( as shown in the accompanying figure. What is true about the respev5whc(jb5d x ,ctive indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium ;)soi(ivob5u+ qa e5 g1 to medium 2 to medium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, n2 and+uobo ;(5e)asivgiq5 n3?

  97.24: The accompanyi 7+ p; +fmnnidbvg3r)qng diagram shows the path that a light ray takes passing through three transparent materials. The indices of refrbmn +;p7qv f3ngd)+riaction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram below shows the path taken by a monochromatic lightzii -j0*3nl*9f 5avo zwbm.rg ray traveling throug*0az9*if5wnl mgoj vz.rb - i3h three media.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling kvgxo(2n2wb 2 in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incidywubzx )0(jw -h/v 8ytent on the surface of a rectangular block of glass at an angle of )whz-w / 8x0uj(tvyby $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is transmitted from air into a piece ofkssd zgl*7 7)8)ur jct glass. Which one of the labeled arrows best ik ) dc8g7sj)urlts *7zndicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the 2mf9lye/bm/-:0t/ mz v woaz-adfm: x:aab+bright-triangular glass as shown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exits twftam a/a/9 yl xdmz:+-z:-b:/fa2o bv b m0emhe glass?